Extract text from Slicer color tables (CTBL)
To convert CTBL Color tables to another format, you need 3D Slicer or other Data software.
To convert other file formats to the "Lookup Table / Encrypted Archive" file type, you need software like 3D Slicer or a similar tool.
A .CTBL file typically serves as a Slicer Color Table in 3D Slicer, a free, open-source software platform used for medical image informatics and 3D visualization. These files map integer label values to specific RGB colors and human-readable names to render segmentations correctly. Alternatively, .CTBL is a file extension appended to user files heavily encrypted by the CTB-Locker (Curve-Torque-Bitcoin) ransomware.
Both versions of the format share severe disadvantages. Slicer color tables are specialized configuration files. They are completely proprietary to the medical imaging pipeline and unsupported by standard graphic editors. CTB-Locker files represent a much larger problem: they are your original data held hostage. They utilize Elliptic Curve Cryptography, making them impossible to open or convert without a unique private key.
Standard online converters will always fail to process these files. Slicer .CTBL files can sometimes be parsed into CSV or TXT to extract the raw RGB mapping values. Ransomware files cannot be converted in any traditional sense.
This file format is difficult to open or convert. Often only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your CTBL file, detects the exact format, and lets you read the text inside.
If you want to convert CTBL file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use 3D Slicer or similar software from the "Medical Imaging Color Lookup" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to CTBL, try 3D Slicer or another comparable tool in the "Medical Imaging Color Lookup" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CTBL converter.